The primary objective of this study is to investigate the influence of content marketing on customer response, specifically examining the mediating role of content medium, among fast food restaurant customers in Amman, Jordan. To accomplish this objective, a descriptive analytical approach is employed. Data was collected from a sample of 500 customers of fast food restaurants in Amman through a questionnaire consisting of 42 items. A total of 389 valid responses were obtained and used for analysis. The researchers utilized appropriate statistical methods, employing SPSS version 22, to analyze the collected data. The findings of the study reveal several significant results. Firstly, the dimensions of content marketing (relevance, credibility, value, attractiveness) were found to have a statistically significant impact on customer response to fast food restaurants in Amman through social media networks, both collectively and individually. Additionally, there were statistically significant differences, at a significance level of α ≤ 0.05, in customer response to fast food restaurants in Amman when considering content marketing via social media networks, with content medium serving as a mediator. Based on the findings, the study recommends placing emphasis on the credibility dimension in content marketing across various social media platforms, particularly Facebook and Instagram. In Amman, it is recommended that fast food restaurants place greater emphasis on the value aspect of content marketing and strive to offer precise and transparent information in order to establish a favorable and well-received brand image among customers. Moreover, it is suggested that these establishments actively encourage customers to share their experiences and provide feedback through social media platforms. Given the substantial influence of content marketing strategies on customer response, owners of fast food restaurants in Amman should prioritize their implementation. Additionally, it is advisable to consistently assess the effect of various content mediums on customer response.